<template>
  <view class="goods_detail" v-if="goods_info.goods_name">
    <!-- 轮播图 -->
    <view class="swiper">
      <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :circular="true">
        <swiper-item v-for="(item, i) in goods_info.pics" :key="i" class="swiper-item"><image :src="item.pics_big" @click="preview(i)"></image></swiper-item>
      </swiper>
    </view>
    <!-- 商品信息区 -->
    <view class="goods-info-box">
      <!-- 价格 -->
      <view class="price">￥&nbsp;{{ goods_info.goods_price }}</view>
      <!-- 商品信息主体 -->
      <view class="goods-info-body">
        <!-- 描述 -->
        <view class="goods-info-name">{{ goods_info.goods_name }}</view>
        <!-- 收藏 -->
        <view class="favi">
          <uni-icons type="star" size="18" color="gray"></uni-icons>
          <text>收藏</text>
        </view>
      </view>
      <!-- 运费 -->
      <view class="yf">快递：免费</view>
    </view>
    <!-- 商品详情 -->
    <rich-text :nodes="goods_info.goods_introduce"></rich-text>
    <!-- 底部 -->
    <view class="goods-nav"><uni-goods-nav :fill="true" :options="options" :buttonGroup="buttonGroup" @click="onClick" @buttonClick="buttonClick" /></view>
  </view>
</template>

<script>
import { mapMutations, mapGetters } from 'vuex';
export default {
  data() {
    return {
      goods_info: {},
      options: [
        {
          icon: 'shop',
          text: '店铺',
          info: 0,
          infoBackgroundColor: '#007aff',
          infoColor: 'red'
        },
        {
          icon: 'cart',
          text: '购物车',
          info: 0
        }
      ],
      buttonGroup: [
        {
          text: '加入购物车',
          backgroundColor: '#ff0000',
          color: '#fff'
        },
        {
          text: '立即购买',
          backgroundColor: '#ffa200',
          color: '#fff'
        }
      ]
    };
  },
  onLoad(options) {
    const goods_id = options.goods_id;
    this.getGoodsDetail(goods_id);
    // this.options[1].info = this.count;
    this.$nextTick(() => {
      this.options[1].info = this.count;
    });
  },
  methods: {
    async getGoodsDetail(goods_id) {
      const { data: res } = await uni.$http.get('/api/public/v1/goods/detail', { goods_id });
      if (res.meta.status !== 200) return uni.$showMsg();
      res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g, '<img style="display:block;"');
      this.goods_info = res.message;
    },
    preview(i) {
      uni.previewImage({
        current: i,
        urls: this.goods_info.pics.map(x => x.pics_big)
      });
    },
    onClick(e) {
      if (e.content.text === '购物车') {
        uni.switchTab({
          url: '/pages/cart/cart'
        });
      }
    },
    buttonClick(e) {
      if (e.content.text === '加入购物车') {
        uni.$showMsg('加入购物车成功');
        // this.$nextTick(() => {
        //   this.options[1].info = this.count;
        // });
        const { goods_id, goods_name, goods_price, goods_small_logo } = this.goods_info;
        const goods = { goods_id, goods_name, goods_price, goods_count: 1, goods_small_logo, goods_state: true };
        this.$store.commit('cart/addToCart', goods);
      }
    }
  },
  computed: {
    ...mapGetters('cart', ['count'])
  },
  watch: {
    count(newVal) {
      const findResult = this.options.find(x => x.text === '购物车');
      if (findResult) {
        findResult.info = newVal;
      }
    }
  }
};
</script>

<style lang="scss">
swiper {
  height: 750rpx;
  image {
    width: 100%;
    height: 100%;
  }
}

.goods-info-box {
  padding: 10px 0px 10px 10px;
  .price {
    margin: 10px 0;
    color: red;
    font-weight: 700;
    font-size: 20px;
  }
  .goods-info-body {
    display: flex;
    justify-content: space-between;
    .goods-info-name {
      font-size: 13px;
      margin-right: 10px;
    }
    .favi {
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      width: 100px;
      font-size: 12px;
      color: gray;
      border-left: 1px solid #efefef;
    }
  }
  .yf {
    margin-top: 10px;
    font-size: 12px;
    color: gray;
  }
}
.goods-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
}
.goods_detail {
  padding-bottom: 50px;
}
</style>
